Natalie Wood and Christopher Walken

They had an affair while filming "Brainstorm" and Natalie invited Chris on a boat trip to Catalina Island. ---------------------------------------------- "There was a whole lot of jealousy, tension building up as soon as we left the dock." The subject of that jealousy was Wood`s co-star in the movie Brainstorm, Christopher Walken, who was joining the Hollywood super-couple for a weekend getaway to Catalina Island. Davern says Wagner was jealous that Wood had invited Walken aboard. "Did he think they were having an affair?" asks INSIDE EDITION`s Les Trent. "I believe so," says Davern ---------------------------------------------- Biographer Gavin Lambert, who knew Natalie for more than ten years, wrote in his book that there was an affair. Lana Wood, Natalie`s sister, also believes so.